Zehua Chen

Henan Polytechnic University

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Xian‐Xiang Zeng

Hunan Agricultural University

Chuanxiang Zhang

Shandong University of Traditional Chinese Medicine

Xiongwei Wu

Hunan Agricultural University

Chengwen Wang

Anhui Polytechnic University

Anjun Wu

Hunan Agricultural University

Qiang Ma

Huawei Technologies (China)

Feng Zhao

Texas A&M University

Wei Zhang

Peking University First Hospital

Hongrui Wang

National University of Defense Technology

Yu Gao

Shandong University of Science and Technology

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Hunan Agricultural University

Chinese Academy of Sciences

Henan Polytechnic University

Beijing National Laboratory for Molecular Sciences

Institute of Chemistry

China University of Petroleum, East China

Central South University

Education Department of Hunan Province

Jilin University

Tsinghua University

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Nano-Enhanced Polymer as a Fluid Loss Additive for Ultra-High Temperature Cementing

Wenjian Yue Chengwen Wang Xiujian Xia Feng Zhao Zehua Chen

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10.2139/ssrn.4796979

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Carbon sheet-decorated graphite felt electrode with high catalytic activity for vanadium redox flow batteries

Carbon (2019)

Yu Gao Hongrui Wang Qiang Ma Anjun Wu Wei Zhang

Flow battery

Carbon fibers

10.1016/j.carbon.2019.03.035

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Surface‐Wrinkle‐Modified Graphite Felt with High Effectiveness for Vanadium Redox Flow Batteries

Advanced Electronic Materials (2019)

Zehua Chen Yu Gao Chuanxiang Zhang Xian‐Xiang Zeng Xiongwei Wu

Abstract Surface‐wrinkle‐modified graphite felt (GF) with abundant N and O is prefabricated by a hydrothermal method followed by calcination, and its surface morphology, elemental composition, and electrochemical properties are characterized by scanning electron microscopy, Raman spectroscopy, X‐ray photoelectron spectroscopy, cyclic voltammetry, electrochemical impedance spectroscopy, and charge/discharge tests. The highly folded coating has excellent wettability, abundant catalytic sites, a fast ion‐diffusion rate, ultralow interface transfer resistance, and high catalytic activity for VO 2+ /VO 2 + and V 2+ /V 3+ reaction couples. Compared with the original GF, the modified GF greatly increases the redox reversibility of the VO 2+ /VO 2 + and V 2+ /V 3+ couples according to cyclic voltammetry profiles. The cathodic and anodic peak potential difference for VO 2+ /VO 2 + substantially decreases from 542 to 388 mV. A battery based on surface‐wrinkle‐modified GF exhibits overall improved efficiency, higher power density, and a high reversible efficiency with a stable average energy efficiency of 78% at a current density of 150 mA cm −2 for 200 charge/discharge cycles.

Flow battery

10.1002/aelm.201900036

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Citations (11)